COMMERCIAL
WATERPROOFING
IN BONHAM, TX.
Bonham's commercial building stock has a median year built of 1975 — the majority of it is now past the 50-year mark, well beyond the service life of any original waterproofing system. With Vector Systems Inc. relocating its headquarters to a new 56,000-sq-ft facility off Highway 82 in 2026, Bonham's established commercial buildings face a straightforward choice: invest in envelope maintenance, or lose out to newer competition.
What Commercial Waterproofing Includes
Comprehensive moisture protection for commercial facilities — from elastomeric coatings to full membrane systems.
Elastomeric Coating Systems
Spray-applied or roll-applied flexible coatings that bridge hairline cracks and expand with temperature changes. For Bonham's 1950s-1980s masonry commercial buildings along Sam Rayburn Highway (US-121) and the Highway 82 corridor, elastomeric coatings restore a continuous moisture barrier after original coatings have aged past their service life.
We apply coatings rated for multi-story substrates — concrete, CMU, brick, and stucco — with proper surface profiling to ensure adhesion that lasts 10-15 years between recoats.
Membrane Waterproofing
Self-adhering and torch-applied sheet membranes for below-grade walls, plaza decks, and parking structures. Essential for Bonham's commercial buildings on the eastern edge of the Blackland Prairie clay belt, where expansive soils exert measured pressures up to 14,000 lbs/sq-ft on foundations during wet-dry cycles.
The Sam Rayburn Memorial VA Medical Center's multi-building campus spans multiple construction phases — membrane waterproofing is critical for below-grade connections and older building wings where hydrostatic pressure is a recurring concern.
Sealant & Joint Replacement
Expansion joints, control joints, and perimeter sealants are the first line of defense — and the first to fail on buildings in Bonham's 50-year-old commercial stock. We remove deteriorated caulking, prepare substrates, and install commercial-grade silicone, polyurethane, or polysulfide sealants matched to each building's movement characteristics.
For the new Vector Systems facility and industrial buildings in the Jones Field Airport area, we use our 56' and 72' boom trucks for efficient access without scaffolding, reducing cost and project timeline.
Penetrating Masonry Sealers
For Bonham's Historic Courthouse Square — including the Steger Opera House (1890) and structures listed with Texas Historical Markers — penetrating sealers absorb into the substrate without changing appearance or character. They repel water while allowing historic masonry to breathe, preventing the trapped-moisture deterioration that film-forming coatings can cause on 130-year-old brick.
We match lime mortar composition and specify historically appropriate sealant chemistry before recommending any treatment for designated historic structures.
Industries We Serve in Bonham
Why Bonham Buildings Need Waterproofing Now
Bonham is the Fannin County seat and carries one of the most storied civic identities in North Texas — birthplace of Speaker Sam Rayburn, home to a VA Medical Center, and a downtown square that lists historic buildings dating to the 1880s. That heritage comes with a maintenance reality: commercial buildings averaging over 50 years old in a weather corridor that delivers 90 mph storms and regular hail events.
New investment is arriving. Vector Systems Inc. (nearly $35M annual revenue) is relocating its headquarters from McKinney to a new 56,000-sq-ft facility on Highway 82, projecting 230 jobs at full build-out. BEDCO is actively recruiting additional manufacturers to the Jones Field Airport industrial corridor. When new industrial tenants arrive, existing commercial buildings that haven't maintained their envelopes face direct competition for occupancy.
Located approximately 30 miles from our Whitesboro headquarters, Bonham is in our core North Texas service area. We work across Fannin County on commercial, industrial, and historic structures — understanding the clay soil conditions and severe weather patterns specific to this part of the region.
Bonham's commercial stock averages 50+ years — well past the service life of any original waterproofing or sealant system
Measured expansion pressure from North Texas Blackland Prairie clay soils in Fannin County — the primary driver of facade cracking and joint failure
Bonham's Historic Courthouse Square includes structures requiring historically sensitive masonry and sealant treatment
Why Choose Griffin Restoration
Commercial exterior restoration since 2000
Licensed in TX, OK, AR, and LA
56' and 72' — self-performing capability
Full coverage for commercial projects
Commercial Waterproofing FAQ
What is commercial waterproofing and why does my building need it?
Commercial waterproofing protects your building envelope from moisture infiltration that causes structural deterioration, mold growth, and tenant complaints. In Bonham, where the median commercial building was constructed in 1975, the majority of the city's commercial stock is now 50+ years old — well past the 25-30 year threshold where original masonry sealants, mortar joints, and waterproof coatings have typically exhausted their service life. Professional waterproofing extends your building's lifespan and prevents costly interior damage before structural deterioration sets in.
What are the signs that a commercial building needs waterproofing?
Look for water stains on interior walls or ceilings, efflorescence (white mineral deposits) on exterior masonry, bubbling or peeling paint on exterior surfaces, visible cracks in mortar joints, and musty odors in lower levels. In Bonnham's Blackland Prairie clay belt, expansive soils exert up to 14,000 lbs/sq-ft of pressure on foundations during wet-dry cycles — stress-cracking facade masonry and opening caulk joints on buildings that haven't had envelope maintenance in a decade or more. The June 2025 severe thunderstorm with 90 mph winds and quarter-size hail is a reminder of how quickly compromised envelopes admit water.
How is commercial waterproofing different from residential?
Commercial waterproofing addresses larger surface areas, multiple substrate types (concrete, CMU, brick, historic masonry), and stricter code requirements. Bonham's commercial buildings also include federally regulated facilities like the Sam Rayburn Memorial VA Medical Center, where exterior maintenance must meet specific facility-condition index standards. We use industrial-grade elastomeric coatings and membrane systems rated for multi-story structures — not the consumer-grade sealers used on residential foundations.
What types of waterproofing systems are used on commercial buildings?
The three primary systems are elastomeric coatings (spray- or roll-applied flexible membranes), sheet membrane systems (self-adhering or torch-applied), and penetrating sealers for masonry substrates. For Bonham's 1950s-1970s commercial buildings along the Sam Rayburn Highway and industrial corridor, elastomeric coatings are commonly combined with sealant replacement at all expansion joints. For the historic masonry structures on the Courthouse Square — some dating to the 1880s — we use penetrating sealers and lime-compatible mortars to ensure the treatment is appropriate for the substrate age.
How often should commercial waterproofing be inspected?
We recommend annual visual inspections and a professional assessment every 3-5 years. After significant weather events — Bonnham experienced a June 2025 storm with 90 mph winds that cut power to 3,200 customers, and the 2012 supercell caused an estimated $905 million in damage across North Texas — inspect immediately. For Bonham's aging commercial stock, where many buildings are already at or past the 50-year mark, staying ahead of the inspection cycle is the most cost-effective maintenance strategy available.
Related Services
Commercial waterproofing often works alongside these complementary services.
Caulking & Sealant Replacement
Failed sealant joints are the #1 cause of water infiltration in commercial buildings. Often combined with waterproofing for complete envelope protection.
Learn more about our sealant services →Exterior Building Repair
Waterproofing after concrete or masonry repair ensures the restored substrate stays protected. We coordinate both services to avoid redundant mobilization.
See our exterior repair capabilities →Parking Garage Repair
Traffic-bearing waterproofing membranes are essential for parking structures. Our team handles structural repair and waterproofing as a single scope of work.
Explore parking garage services →Protect Your Bonham Property
Whether you manage a historic Courthouse Square property, a VA Medical Center facility, or an industrial building in the Highway 82 corridor — we'll assess your waterproofing needs and provide a detailed scope of work.